EcoSmarte Pool System Manual page 23

GLASS FILTER MEDIA-
ANOTHER GREAT PRODUCT
DEVELOPED by ECOsmarte
ECOsmarte's Glass Pack® is made from
100% recycled glass. It is crushed, dried at
250 degrees Fahrenheit, and screened
into various sized fractions to achieve opti-
mal filtration properties.
As the grains are nearly all angular in
shape and have a fairly high degree of
sphericity, the filter bed tends to have more
opened packing resulting in better perme-
ability than a filter of spherical silica grains.
Because glass is amorphous and has no
internal crystal structure, the particles are
homogenous and have no grain bound-
aries. This gives glass more resistance to
breakdown through filtration backwashing
cycles.
Furthermore the lack of grain boundaries
minimizes cracks where bacteria can
lodge and resist flushing in back washing.
Glass particles have a slight negative
charge on their surface, which tend to hold
onto fine particles during the filtration
cycle. Upon back washing, this weak
charge releases these fine particles to the
effluent thereby contributing to better filtra-
tion action. There is less water to the bet-
ter permeability of a glass filter.
As crushed glass is lighter than silica
sand, between 15 and 20% less glass is
needed to fill a filtration unit. With the bet-
ter filtration characteristics and lower den-
sity glass is a superior filtration media for
many filtration applications. It can be used
in swimming pool and spa filters as well.
Glass filter media is now being used in
storm water runoff filtration systems as a
replacement for silica sand.
Using glass not only results in good per-
formance, but in real cost benefits over
the life of a filter bed.
Copyright 2004, 2005, 2006, 2007, 2011 Ecosmarte Planet Friendly, Inc. - Richfield, MN
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